diff --git a/mateclaw-ui/src/components/chat/ChatInput.vue b/mateclaw-ui/src/components/chat/ChatInput.vue
index c4515808..6ae1059c 100644
--- a/mateclaw-ui/src/components/chat/ChatInput.vue
+++ b/mateclaw-ui/src/components/chat/ChatInput.vue
@@ -64,7 +64,7 @@
           <el-icon><WarningFilled /></el-icon>
         </span>
         <span class="approval-bar__label">{{ t('chat.approvalAllow') }}</span>
-        <span class="approval-bar__tool">{{ pendingApproval.toolName }}</span>
+        <span class="approval-bar__tool">{{ getToolLabel(pendingApproval.toolName) }}</span>
         <span class="approval-bar__label">{{ t('chat.approvalExecute') }}</span>
       </div>
       <div class="approval-bar__actions">
@@ -203,6 +203,7 @@
 import { ref, computed, nextTick, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { CloseBold, MagicStick, Microphone, Paperclip, Promotion, Select, Timer, WarningFilled } from '@element-plus/icons-vue'
+import { useToolLabel } from '@/composables/useToolLabel'
 import type { ChatAttachment, PendingApprovalMeta, StreamPhase, QueuedMessage } from '@/types'
 
 interface Props {
@@ -272,6 +273,7 @@ const emit = defineEmits<{
 }>()
 
 const { t } = useI18n()
+const { getToolLabel } = useToolLabel()
 
 // 内部状态
 const containerRef = ref<HTMLElement | null>(null)
diff --git a/mateclaw-ui/src/components/chat/MessageBubble.vue b/mateclaw-ui/src/components/chat/MessageBubble.vue
index 62c2d3e9..0eb470fc 100644
--- a/mateclaw-ui/src/components/chat/MessageBubble.vue
+++ b/mateclaw-ui/src/components/chat/MessageBubble.vue
@@ -89,7 +89,7 @@
                     <el-icon v-else-if="tc.success !== false" class="tc-icon--success"><Select /></el-icon>
                     <el-icon v-else class="tc-icon--error"><CloseBold /></el-icon>
                   </span>
-                  <span class="tool-call__name">{{ tc.name }}</span>
+                  <span class="tool-call__name">{{ getToolLabel(tc.name) }}</span>
                   <span class="tool-call__args" v-if="tc.arguments">{{ truncateArgs(tc.arguments) }}</span>
                 </div>
               </div>
@@ -108,13 +108,13 @@
         <div v-if="pendingApproval" class="approval-inline">
           <el-icon class="approval-inline__icon"><WarningFilled /></el-icon>
           <span v-if="pendingApproval.status === 'pending_approval'" class="approval-inline__text">
-            {{ $t('chat.approvalWaiting') }} <code>{{ pendingApproval.toolName }}</code>
+            {{ $t('chat.approvalWaiting') }} <code>{{ getToolLabel(pendingApproval.toolName) }}</code>
           </span>
           <span v-else-if="pendingApproval.status === 'approved'" class="approval-inline__text approval-inline--approved">
-            {{ $t('chat.approved') }}: <code>{{ pendingApproval.toolName }}</code>
+            {{ $t('chat.approved') }}: <code>{{ getToolLabel(pendingApproval.toolName) }}</code>
           </span>
           <span v-else class="approval-inline__text approval-inline--denied">
-            {{ $t('chat.denied') }}: <code>{{ pendingApproval.toolName }}</code>
+            {{ $t('chat.denied') }}: <code>{{ getToolLabel(pendingApproval.toolName) }}</code>
           </span>
         </div>
 
@@ -279,6 +279,7 @@ import {
 } from '@element-plus/icons-vue'
 import { useMarkdownRenderer } from '@/composables/useMarkdownRenderer'
 import { useAuthenticatedAttachment } from '@/composables/useAuthenticatedAttachment'
+import { useToolLabel } from '@/composables/useToolLabel'
 import { http } from '@/api'
 import TypingCursor from './TypingCursor.vue'
 import BrowserTimeline from './BrowserTimeline.vue'
@@ -293,6 +294,7 @@ import type { ChatErrorInfo } from '@/types/chatError'
 
 const { renderMarkdown } = useMarkdownRenderer()
 const { t } = useI18n()
+const { getToolLabel } = useToolLabel()
 const { blobUrls, loadAllImages, loadAllVideos, downloadFile, openImage, getDisplayUrl, revokeAll } = useAuthenticatedAttachment()
 
 interface Props {
diff --git a/mateclaw-ui/src/components/chat/ToolCallSegment.vue b/mateclaw-ui/src/components/chat/ToolCallSegment.vue
index 586e0179..71339d76 100644
--- a/mateclaw-ui/src/components/chat/ToolCallSegment.vue
+++ b/mateclaw-ui/src/components/chat/ToolCallSegment.vue
@@ -1,12 +1,15 @@
 <script setup lang="ts">
 import { ref, computed, watch } from 'vue'
 import { Loading, Select, CloseBold, ArrowDown, Document, Setting } from '@element-plus/icons-vue'
+import { useToolLabel } from '@/composables/useToolLabel'
 import type { MessageSegment } from '@/types'
 
 const props = defineProps<{
   segment: MessageSegment
 }>()
 
+const { getToolLabel } = useToolLabel()
+
 const expanded = ref(props.segment.status === 'running')
 
 // running → completed 时自动折叠
@@ -14,7 +17,7 @@ watch(() => props.segment.status, (val) => {
   if (val !== 'running') expanded.value = false
 })
 
-const displayName = computed(() => (props.segment.toolName || '').replace(/_/g, ' '))
+const displayName = computed(() => getToolLabel(props.segment.toolName || ''))
 
 const truncatedArgs = computed(() => {
   const args = props.segment.toolArgs || ''
diff --git a/mateclaw-ui/src/composables/useToolLabel.ts b/mateclaw-ui/src/composables/useToolLabel.ts
new file mode 100644
index 00000000..4edfe6a3
--- /dev/null
+++ b/mateclaw-ui/src/composables/useToolLabel.ts
@@ -0,0 +1,43 @@
+import { useI18n } from 'vue-i18n'
+
+/**
+ * Title-case a raw camelCase / snake_case / kebab-case tool name.
+ * Last-resort fallback for unknown tools; the i18n table is authoritative
+ * for built-ins (see toolLabels in locale files).
+ *
+ *   wiki_search_pages → "Wiki Search Pages"
+ *   delegateToAgent   → "Delegate To Agent"
+ *   browser-use       → "Browser Use"
+ */
+export function humanizeToolName(raw: string): string {
+  if (!raw) return ''
+  return raw
+    .replace(/([a-z])([A-Z])/g, '$1 $2')
+    .replace(/[-_]+/g, ' ')
+    .replace(/\s+/g, ' ')
+    .trim()
+    .replace(/\b\w/g, (c) => c.toUpperCase())
+}
+
+type TFn = (key: string) => string
+type TeFn = (key: string) => boolean
+
+/**
+ * Pure resolver — callable outside Vue setup (pass t/te from a useI18n() instance).
+ * Resolution: toolLabels.<rawName> in active locale → humanizeToolName(rawName).
+ */
+export function resolveToolLabel(raw: string, t: TFn, te: TeFn): string {
+  if (!raw) return ''
+  const key = `toolLabels.${raw}`
+  return te(key) ? t(key) : humanizeToolName(raw)
+}
+
+/**
+ * Composable — must be called inside a Vue setup context.
+ */
+export function useToolLabel() {
+  const { t, te } = useI18n()
+  return {
+    getToolLabel: (raw: string) => resolveToolLabel(raw, t, te),
+  }
+}
diff --git a/mateclaw-ui/src/i18n/locales/en-US.ts b/mateclaw-ui/src/i18n/locales/en-US.ts
index ef866a81..848256e5 100644
--- a/mateclaw-ui/src/i18n/locales/en-US.ts
+++ b/mateclaw-ui/src/i18n/locales/en-US.ts
@@ -1865,4 +1865,79 @@ export default {
       skipped: 'Nothing to consolidate',
     },
   },
+  // Tool display labels consumed by useToolLabel() — keys must mirror zh-CN.ts exactly.
+  // Unknown tools (MCP / custom skills) fall back to humanizeToolName() and are not listed here.
+  toolLabels: {
+    // Delegation
+    delegateToAgent: 'Delegate to Agent',
+    delegateParallel: 'Parallel Delegation',
+    listAvailableAgents: 'List Agents',
+
+    // Wiki
+    wiki_search_pages: 'Search Knowledge Base',
+    wiki_semantic_search: 'Semantic Search KB',
+    wiki_read_page: 'Read KB Page',
+    wiki_list_pages: 'List KB Pages',
+    wiki_related_pages: 'Find Related Pages',
+    wiki_trace_source: 'Trace Knowledge Source',
+    wiki_create_page: 'Create KB Page',
+    wiki_delete_page: 'Delete KB Page',
+    wiki_enrich_page: 'Enrich KB Page',
+    wiki_explain_relation: 'Explain Relation',
+
+    // Web search
+    search: 'Web Search',
+
+    // Memory
+    recall_structured: 'Recall Memory',
+    remember_structured: 'Save Memory',
+    forget_structured: 'Clear Memory',
+    fact_probe: 'Probe Facts',
+    fact_related: 'Query Related Facts',
+    fact_list_contradictions: 'Check Contradictions',
+    session_search: 'Search Sessions',
+    read_workspace_memory_file: 'Read Memory File',
+    write_workspace_memory_file: 'Write Memory File',
+    edit_workspace_memory_file: 'Edit Memory File',
+    list_workspace_memory_files: 'List Memory Files',
+
+    // Files & shell
+    read_file: 'Read File',
+    execute_shell_command: 'Execute Command',
+    extract_document_text: 'Extract Document',
+    extract_pdf_text: 'Extract PDF',
+    extract_docx_text: 'Extract Document',
+    detect_file_type: 'Detect File Type',
+    readMateClawDoc: 'Read System Docs',
+
+    // Generative
+    image_generate: 'Generate Image',
+    video_generate: 'Generate Video',
+    music_generate: 'Generate Music',
+
+    // Data
+    query_datasource: 'Query Datasource',
+    execute_sql: 'Execute SQL',
+
+    // Browser
+    browser_use: 'Browser Action',
+
+    // Cron
+    create_cron_job: 'Create Cron Job',
+    list_cron_jobs: 'List Cron Jobs',
+    toggle_cron_job: 'Toggle Cron Job',
+    delete_cron_job: 'Delete Cron Job',
+
+    // Time
+    getCurrentDateTime: 'Get Current Time',
+    getCurrentTime: 'Get Current Time',
+    getCurrentDate: 'Get Current Date',
+
+    // Skills
+    skill_manage: 'Manage Skills',
+    runSkillScript: 'Run Skill',
+    listSkillFiles: 'List Skill Files',
+    listAvailableSkills: 'List Skills',
+    readSkillFile: 'Read Skill File',
+  },
 } as const
diff --git a/mateclaw-ui/src/i18n/locales/zh-CN.ts b/mateclaw-ui/src/i18n/locales/zh-CN.ts
index f5af6694..bf6eaa85 100644
--- a/mateclaw-ui/src/i18n/locales/zh-CN.ts
+++ b/mateclaw-ui/src/i18n/locales/zh-CN.ts
@@ -1875,4 +1875,79 @@ export default {
       skipped: '没有需要整合的内容',
     },
   },
+  // Tool display labels consumed by useToolLabel() — keys must mirror en-US.ts exactly.
+  // Unknown tools (MCP / custom skills) fall back to humanizeToolName() and are not listed here.
+  toolLabels: {
+    // Delegation
+    delegateToAgent: '委派给智能体',
+    delegateParallel: '并行委派',
+    listAvailableAgents: '列出可用智能体',
+
+    // Wiki
+    wiki_search_pages: '搜索知识库',
+    wiki_semantic_search: '语义检索知识库',
+    wiki_read_page: '读取知识库页面',
+    wiki_list_pages: '列出知识库页面',
+    wiki_related_pages: '查找相关页面',
+    wiki_trace_source: '溯源知识库',
+    wiki_create_page: '创建知识库页面',
+    wiki_delete_page: '删除知识库页面',
+    wiki_enrich_page: '丰富知识库页面',
+    wiki_explain_relation: '解释关联关系',
+
+    // Web search
+    search: '联网搜索',
+
+    // Memory
+    recall_structured: '检索记忆',
+    remember_structured: '保存记忆',
+    forget_structured: '清除记忆',
+    fact_probe: '探查事实',
+    fact_related: '查询关联事实',
+    fact_list_contradictions: '检查矛盾事实',
+    session_search: '搜索会话',
+    read_workspace_memory_file: '读取记忆文件',
+    write_workspace_memory_file: '写入记忆文件',
+    edit_workspace_memory_file: '编辑记忆文件',
+    list_workspace_memory_files: '列出记忆文件',
+
+    // Files & shell
+    read_file: '读取文件',
+    execute_shell_command: '执行命令',
+    extract_document_text: '提取文档内容',
+    extract_pdf_text: '提取 PDF 内容',
+    extract_docx_text: '提取文档内容',
+    detect_file_type: '识别文件类型',
+    readMateClawDoc: '查阅系统文档',
+
+    // Generative
+    image_generate: '生成图片',
+    video_generate: '生成视频',
+    music_generate: '生成音乐',
+
+    // Data
+    query_datasource: '查询数据源',
+    execute_sql: '执行 SQL',
+
+    // Browser
+    browser_use: '浏览器操作',
+
+    // Cron
+    create_cron_job: '创建定时任务',
+    list_cron_jobs: '查看定时任务',
+    toggle_cron_job: '启停定时任务',
+    delete_cron_job: '删除定时任务',
+
+    // Time
+    getCurrentDateTime: '获取当前时间',
+    getCurrentTime: '获取当前时间',
+    getCurrentDate: '获取当前日期',
+
+    // Skills
+    skill_manage: '管理技能',
+    runSkillScript: '运行技能',
+    listSkillFiles: '列出技能文件',
+    listAvailableSkills: '列出可用技能',
+    readSkillFile: '读取技能文件',
+  },
 } as const